inspector: expose original console

Adds require('inspector').console, mapping it to the original
global.console of V8. This enables applications to send messages to
the inspector console programmatically.

Fixes: https://github.com/nodejs/node/issues/21651

PR-URL: https://github.com/nodejs/node/pull/21659


Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>